7th July 1899
|Description||Type †||o/p ‡||Scott||SG||Mi||Y&T|
|US stamps overprinted|
|1 cent deep green||B||1||1|
|2c rose carmine||IV||B||2a||3|
|4c lilac brown||B||4||5|
|8c violet brown||B||7||8|
|10c brown||I||B||8||9, 10|
|10c blue Special Delivery||R||E1||E15|
† The "types" refer to detail variations in the original US stamps, see US catalogue listings. These are the Scott  types: Gibbons  distinguishes some variations but less precisely than Scott.
‡ Overprint R(ed) or B(lack). Sc1-13 are horizontal, Sc-E1 the only diagonal o/p.
This is the complete list of stamps from Guam.
One of the Mariana islands in the Pacific Ocean, the U.S.S. Charleston captured Guam in the Spanish-American War of 1898. The island remained under US Navy control (apart from Japanese occupation during WW2, 1941-44) until 1950 when it became an unincorporated territory of the US. US stamps have been used since 1901.